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[Preprint]. 2023 Jan 27:arXiv:2301.11085v2. [Version 2]

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Figure 2. — A typical pair of dCT (A) and pCT (B) of a patient. (A) the difference in the shape of the couch results in a clear change in the patient’s back curvature. Also, the overall shape of the body is different due to the active breath-hold motion management procedure that is used for pCT acquisition and treatment delivery. (C, D) the differences in patient body shape results in a difference in dose distribution (the couches are already removed for planning).